Trolley collector assembly



April 11, 1950 H. L. MYERS 2,503,588

v TROLLEY COLLECTOR ASSEMBLY Filed June 28, 1945 2 Sheets-Sheet 1 /z'g' l/VVENTOR April 1l, 1950 H. L. MYERS 2,503,588

TROLLEY COLLECTOR ASSEMBLY Filed June 2e, 1945 2 sheets-sheet a 7 l 6 8 L/z 2/ /12 /5/8/9/@3 7 f"J 8K 4 4 1 5' 5 "fr r' 11; l

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site 'tends f 'of the "crane rbridge #sometimes lknown 4'as cross trolleys Patentec pr. 11, 1.950

TED @STAT-Es fPArlaEeNT .QPF-11GB "TRIL'EY COLLECTOR ASSEMBLY HarryL. ,.Myers, Cleveland.eHeg-lrxts, Ohio Application ".I une 28, 1945,;SerialNo. '602,058

AiClams. 1

vMy sinvention relates to v infiprovemen`t -in electric'crarrecollector'assembly,Wherethe numerous fclosely .spaced trolley w'ires having no Ainterme- `idiate suspension 'devices ,are dead endeifcn.v oppoiSuch --wires are Inthislftype o'f Atrolley vWire installation, 1 an inverted collector, 'of *the `powdereii A"metallurgy "type, works =on `the top :Side of .the itrolleywire in 'conil'unction'lwith ra vlikecollect/o1"thatWoiis-on1thebott'omssicle -o'f the fsam'eawlre. To conserve-space ands-allow for-close ltrolleyWire spacing, they are lconstructed to :al-

' fFirst, 'to provide necessary carrying -capacity n"fo1`220^volt yMiO ,-P. C: motors, -where starting current kmomentarily Teaches famperes, aand hundreds of *operationserenecessary each day.

*Secondtoeliminat-e. over heating.

Third. Ato 'provide a-'fixed amount `of contact jpressure iat all 'times between *collectors an'dttiol- @ley wire ,iirrespec'tive of -fcarriage location.

Fourth, 1Ato jgprovde Aadjustabl'e spring "tension towake care of "collector wear finte. simplied, practical, accessible method.

yFifth,'toieliminatefallfcoliector `arcingf an'itrolley' Wirefbnrning"anti'assureE long Wear tothe trolifley wirefand cliector.

Sixth, to perfect a method -fof operation lthat collectors r-of :powdered *metallurgy `composition, containing graphite aanfdfmetais, ican fmore Lsatis- "actorily ibe useti aon =any^trolley wire that fdoes 'met *have vsamy Vintermediate vimpport attached :to ftiolleywire.

`In marrying `:my,.mverition:into practice, I fpro- Wide ia. liectcr aassenbly Vlr,comprising fra liframe (Cl. t191- 5.7)

Y2 uholder located "to Jtheright of "stationary Lholder 'and Vwith the-co1lectore1ementfremoved. iFigure 3 can-becalled a yrighthenfd over and under collec- `vtorassembly. `Theyare itobe used'in-rights and `lleits toI accommodate closely 'spaced trolley Wires.

@Figure i is Aa y'sid-e View of 4a. ileft -hand collector Aassembly s'hoWingposition-o'i collector and shunts in proper location and the position they'workeon vvIthe'ftrollexy' Wire.

`Figure f5 =is aftop plan `View ofthe right hand "collector assembly.

v"Figure 6 Yis abottom fplan AView ofthe same.

Figure Ziis van end -view -ofthe same,glooking=to 'Ward right hand 4end o'fFigure `5, omitting jthe clamp-elements.

` `Fig-u1es"1, 3, 6and'7"are nright hand ,collector assembly, 'and (Figure '4 is '-le'ft *hand vcollectorfassembly. If in Figure 3 the collectors, shunts,` and `trolley Wire were shown 'asf-.theyrafre iin 'Figure 4, lfthen Figures "3 and-fl-wouidshow both right'and left handcollectorfassemblies as applied infuse.

:Similar numerals *refer to `similar parts 'throughouttheseveralfviews. 'The l.collector -assembly fo'f #my -invention com- .prisesa framefmember`Zf-havingrigidly'associated 'therewith al-collector yunit-'conss'tingof a lholder iI to'wliichisfdetachabiy connected arshoelltfcon- -hstructedain:accordance:wit'h'United StatesPatent v`No. 2,044,886, inhwhich lis-secured a'grooved contact elementr constructed iii-accordance with lUnitedStates-PatentfNo.f2;f18'5270. -A'second col- 'flectorrunit isvpivotally secured'to-thefirame 2=and )consistsoffaholderf |"-5toiw'hichis` detachably con- `nectl-:dfafshoe LI'B A ff'thesame lconstruction as shoe l0, and the shoe l 0 has secured thereinzagrooved :contact l element i9 gef lf-like .construction `to the -.ccmtact element 9. LTheShOes `:I :and f illm'e Aeach :formednwith m'tered malelugs 13'.. seefFigureiE), whichit into :mitered female .1recessesf2'3 iformediin: oneisde fof Eachnithe shoes flfarid L!)';alsoeisiprovidedfwith zazrespective 1bolt .'ILI which .is `iangularlyfjclisio'sed as seen fintEigunes 5 :and i6v andthe inn-er :endmf which; is :adaptedrto:engageazmitered slot 24 pro.-

:,vi'dednfeach 0'f;;the:ho1ders ,fl and 1lisas lalsoseen indiliguregz. In :emerito-engage thershoe itu-or @0 .withthe holder vaor .45, the; bolt1. Ll :is rshbacked fout, @and athen ithe oendlof fthe shoe fthat, has fthe 50 lugs 123' :is .'lengaged zover 3the fholder so ithat che -nuts -5 hold screws 4--4 in place.

3 lugs are received in the recesses 23 of the holder. Then the bolt end of the shoe is pushed over the holder and the bolt tightened up so that its inner end is engaged in the recess 24. The bolts II for each shoe serve to secure the shunts I2 by means of lock washer I3 and nut I4.

The holder I is clamped to the conventional perpendicular insulated collector arm at the proper elevation by means of clamp 6, bolts 1, and nuts 8.

For the pivotal connection of the said second collector unit to the frame 2 the latter is provided with a bearing opening 3 which receives the shaft I 6 secured to the holder I5. The lower end of the shaft I6 is threaded and has holes drilled to receive a cotter key. Spring I1 works over shaft I6 and compressed to the desired contact tension by slotted nut I8 and locked in position with cotter key I9, the spring Il being compressed between the nut I8 and the frame 2, whereby to bias the holder I5 for movement axially of the shaft I6 toward the frame 2. The shoes I and I0' are arranged on their respective holders I and I so that the grooved contact elements 9 and 9' have their grooves facing toward one another for engagement with opposite sides of a trolley wire to be received in said grooves. When the trolley wire is so received 1 in the grooves of the contact elements, the same are maintained in tight engagement with the wire by reason of the spring action on the co1- lector unit which includes the holder I5 and Alignment screws 4 and 4 are adjusted against -the sideof the shoe I0 for proper alignment of the contact element carriedthereby with the trolley wire 20, said adjusting screws 4-4 having threaded cooperation with the arm 3. Jam The opposite ends of the shunts I2 are placed on one of the bolts I or I with the motor lead or circuit wire that it is to supply and secured with lock washer 2l and nut 22.

The two-piece collector shown in the drawing consists of a renewable insert collector, U. S.

PatentNo. 2,185,270 which is held in the shoe,

"U,y S. Patent No. 2,044,886. The above collector used singly on H. P. 220 volt A. C. crane opera.- tion heats excessively, but when used in conjunction with the under and over collector assembly herein is far superior to the trolley wheel or bronze shoe collectors, and through the use of lthe under and over collector assembly and the use of powdered metallurgy collectors, the life of the trolley wire is greatly increased.

I am aware that twin wheel collectors are in use, but they depend on the weight of the wire for contact. I, therefore, do not claim the use of two collectors on the same trolley wire broadly.

1 I claim:

1. A collector assembly of the class described comprising a frame member, a pair of collector units, each unit including a contact element having a groove therein adapted to receive a trolley Vwire in contact therewith, said contact elements being arranged to engage opposite sides of the -trolley wire in opposed relation, one of said units Vbeing rigidly secured to said frame and the other `of`said units having pivotal connection with said frame, and means associated with said frame and cooperating with said latter unit for adjusting the same about the axis of said pivotal connection to a desired fixed position, and yieldable means associated with said latter unit andsaid frame and permitting `limited yieldable move-4 ment of said latter unit relative to said frame in the direction of said axis, the pivotal connection including a pivot shaft and the yieldable means comprising a spring member mounted on said shaft and interposed between said latter unit and said frame.

2. A collector assembly of the class described comprising a frame member, a pair of collector units, each unit including a contact element having a groove therein adapted to receive a trolley wire in contact therewith, said contact elements being arranged to engage opposite sides of the trolley wire in opposed relation, one of said units being rigidly secured to said frame and the other of said units having pivotal connection with said frame, and means associated with said frame and cooperating with said latter unit for adjusting the same about the axis of said pivotal connection to a desired fixed position, and yieldable means associated with said latter unit and said frame and permitting limited yieldable movement of said latter unit relative to said frame in the direction of said axis, the said units being disposed so that the respective contact elements are engageable with a single trolley wire from opposite directions and wherein one of the said units is disposed so that its contact element may engage a diiferent portion of the same wire than that engaged by the contact element of the rst unit.

3. A collector assembly of the class described comprising a frame, a pair of collector units, each unit including a contact element having a, groove therein adapted to receive a trolley wire in contact therewith, said contact elements being arranged to engage opposite sides of the trolley wire in opposed relation, one of said units being rigidly secured to said frame and the other of said units having a pivotal connection with said frame, the axis of said pivotal connection being disposed so as to permit movement of the latter unit in a direction transverse to the axis of the groove of the contactl element of said first unit, means associated with said frame and cooperating with said latter unit for adjusting the same 'about the axis of the said pivotal connection to a desired xed position and yieldable means associated with said latter unit and said frame and permitting limited yieldable movement of said latter unit relative to said frame in the direction of said axis, combined with yieldable means associated with the said latter unit and said frame and permitting limited yieldable movement of the said latter unit relative to said frame in the direction of said axis.

4. A collector assembly of'the class described comprising a frame member, a pair of collector units, each unit including a contact element having a groove therein adapted to receive a trolley wire in contact therewith, said contact elements being arranged to engage opposite sides of the trolley wire in opposed relation, one of said units being rigidly secured to said frame and the other of said units having pivotal connection with said frame, and means associated with said frame and cooperating With said latter unit for adjusting the same about the axis of said pivotal connection -to a desire-d fixed position, and yieldable means associated with said latter unit and said frame `and permitting limited yieldable movement of said latter unit relative to said frame in the direction of said axis, thesaid units being disposed so that the respective contact elements are engageable with a single trolley wire from opposite directions and wherein one of the said units is disposedso that 'its 'contact 'element-may 5 engage a different portion of the same wire than that engaged by the contact element of the rst unit, said pivotal connection including a pivot shaft and the yieldable means comprising a spring member mounted on said shaft interposed between said latter unit and said frame, the axis of said shaft being disposed so as to permit pivotal movement of said latter unit in a direction transverse to the axis of the groove of the contact element of said rst unit.

HARRY L. MYERS.

REFERENCES CITED The following references are of record in the file of this lpatent:

Number Number UNITED STATES PATENTS Name Date Caffrey Feb. 9, 1897 Reed Nov. 26, 1918 Vallino Jan. 24, 1922 Dunbar Sept. 4, 1923 Pollard Dec. 28, 1926 Larsson June 23, 1936 FOREIGN PATENTS Country Date Italy May 19, 1939 Germany July 14, 1927 

